Filtering vtkStructuredPoints

[Goodwin Lawlor]

Straight from ../frog/segmented8.tcl

vtkImageThreshold selectTissue
    selectTissue ThresholdBetween $TISSUE $TISSUE
    selectTissue SetInValue 255
    selectTissue SetOutValue 0
    selectTissue SetInput [$lastConnection GetOutput]


$TISSUE is the scalar value of the tissue you want to exclusively select.

You probably should look at the whole frog example...
../vtk/examplesTcl/frog/

Goodwin


----- Original Message -----
From: R. Mercado <redhat at newton.rex.dmu.ac.uk>
To: <vtkusers at public.kitware.com>
Sent: Wednesday, February 23, 2000 3:40 PM
Subject: Filtering vtkStructuredPoints


> Hello vtk users,
>
> I would like to filter a cube of structured points based on
> the scalar values (I would specify a range of values) and set the rest of
> the volume to zeros.
>
> In my application, a scalar tells what the material is at a particular
> location on the volume and I would like to select a volume with one
> specific material only - all other materials removed. Something like a
> band pass filter in one-dimensional signal processing.
>
> I found vtkContourFilter, but that would give me as a result vtkPolyData
> and not the vtkStructuredPoints that I want.
>
> I could not figure out a pipeline to solve this. Is there a pre-built
> filter to allow me to do that?
>
> Thanks for your input.
>
> R. Mercado
>
>
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